Locomotive-truck.



J. S. PAYNE.

LOCOMOTIVE TRUCK.

APPLICATION man MAR-22,1917.

Patented May 22,1917.

2 SHEET$SHEET WITNESSES J. s. PAYNE.

LOCOMOTIVE TRUCK.

APPLICATION FILED MAR-22, 19H.

Patented May 22, 1917.

2 SHEETS-SHEET}.

LOCOMOTIVE-TRUCK.

Specification of Letters Patent. Patented May 22, 1917.

Application filed March 22, 1917. Serial No. 156,521.

To all whom it may GORCGWLI.

Be it known that I, JOHN S.PAYNE, of /Vortendyke, in the county ofBergen and State of New Jersey, have invented a certain new and usefulImprovement in LocomotiveTrucks, of which improvement the following is aspecification.

My invention relates to two wheeled radial leading or trailing trucksdesigned for supporting front or rear' overhanging weight inlocomotives, and its object is to provide, in a truck of such type,simplified and effective means for equalization between the drivingwheels and truck, con trol of centering effort, and removal andreplacement of the entire truck, or of parts thereof, for whichsubstitution is required by reason of their having'become worn orbroken.

The improvement claimed is hereinafter fully set forth.

In the accompanying drawings: Figure 1 is a side view, in elevation, of,the rear portion of a locomotive engine, illustrating an application ofmy invention in a trailing truck; Fig. 2, a view, the right hand half ofwhich is a vertical transverse section through the truck, in the planeof the truck axle, and the left hand half, a rear elevation; and, Fig.3, a plan ortopview of the truck.

In the practice of my invention, referring descriptively' to the.specific embodiment thereof in a two wheeled radial locomotive trailingtruck which is herein exemplified, the frame of the truck comprises atop transom, 1, having plane horizontal seats, 1, on its upper surface;two pairs of pedestal jaws, 2, 2, which are secured to the'ends of thetransom by bolts, 2*; radius bars, 3, which are secured to the lowerends of the pedestal jaws by bolts, 3*, and extendforwardly therefrom,and which may be either integral, in V form, as shown, or be securedtogether at their forward ends; and downwardly and forwardly inclinedbraces, 4, the upper ends of which are secured to the transom, 1, andtheir lower ends to the radius bars. 7

The truck wheels, 5, are secured upon the outer ends of an axle, 6,which rotates in journal boxes, 7, each of which is fitted, with thecapacity of relative vertical movement, between the members of one ofthe pairs of pedestal jaws, 2. The weight borne by the truck istransmitted to the journal boxesthrough pairs of'helical springs, 8,interposed between the upper horizontal portions of the pedestal jawsand spring seats, 8*, pivoted to lateral lugs, 7 on the journal boxes.

The truck axle, 6, is equalized with the nearest driving axle, 9, byequalizing levers, 10, which are journaled in brackets, 11, dependingfrom the side members, 11, of the locomotive frame, the forward ends ofsaid levers'being coupled to the spring hangers, 12, of the adjacentends of the springs, 13, of the driving axle, 9. The rear ends of theequalizing levers are coupled, by pins, 10*, to a bolster, 14, whichrests on the seats,

1?, of the transom, 1, of the truck frame, the

latter sliding under the bolster in swinging transverselyv to thelocomotive. Movement of the bolster, transversely to the locomotive, isprevented by vertical bearings, 14*, on its ends, which adjointheinnerqsides of the main frame members, 11. ,7

The capacity of required radial movement of the truck-relatively to themain frame of the locomotive, is afforded it by its pivotal connectionto said frame by a radius bar pin, 15, which is located in thelongitudinal central plane of the locomotive, and passes through anweyein the front ends of the radius bars, 3-, and through a correspondingeye in the horizontal portion of a cross bearer, 16, which is ofsubstantially U form, itsvertical end portions being secured to the mainframe members by bolts, 16*. The truck frame vis'normally maintained inline with the main frame and returned to such normal relation afterpassing curves, by transversely extending centering springs,

' 17 abutting, at their outer ends, on bearings, 17, secured to themainframe members, and, at their inner ends, on washers, 18 fitted on bolts,18, which are coupled to a guard plate, 19, secured to the trucktransom, 1, by bolts, 19, and fitting over the sliding; bolster, 14. Thetension of the centering springs may be adjusted, as desired, by nuts,18", engaging threads on the bolts, 18.

Among the advantages resultant upon the application of my invention, maybe noted that by reason of the equalizing means which it provides, theequalizing beams can be kept well outwardly toward the journal b oxeswhen used as a trailing truck, and the load on curves will not begreater than on straight track, there being no upwardly i seen that theconstruction may, without swinging bolster which would increase the loadon truck, No center pm belng used,

the truck can be made low, and by removing the radius bar pin, the truckcan be: readily removed from the locomotive, when deslred. Thecenterlngeffort can be varied, as de sired, by increasing or. decreasingthe ten- 81011 of the sprlngs, and the guard secured to transom willprevent the truck frame dropping, in case of derailment." It will be'tion of a main frame; a radial'truck pivoted thereto; and anequalizing'system interposed between the supporting wheels of the mainand truck frames and comprising equalizing levers which are pivotallyconnected to the main frame and supported on the truck frame free fromconnection thereto.

2. In a locomotive engine, the combination of a main frame; aradial"truck pivoted thereto; and an equalizing system interposed between thesupporting wheels of the'main and truck frames and comprising equalizinglevers which .are pivotally connected to the main frame and mounted onthe truck frame with the capacity of free transverse,

movement thereof, relatively to the equaliz- 7 ing levers.

3. In a locomotive engine, the combination 7 of a main frameya radialtruck pivoted thereto; and an equalizing system interposed between thesupporting wheels of the main and truck frames and comprising equalizinglevers which are pivotally connected to the 7 main frame, and a bolstercoupled to said levers and supported freely on the truck 7 frame.

4. In a locomotive engine, the combination of a main' frame; aradialtruck pivoted thereto; equalizing levers pivotally connect ed to themainframe; a bolster coupled to said levers 'and supported freely 'on'the truck frame; and means for preventing movement of said bolstertransversely to the truck frame. 7

5. In a locomotive engine, the combination 7 of a .mainframe; ,a' radialtruck pivoted thereto; equalizing'lever's pivotally connect:

ed to the main frame;'a bolster coupled to said levers and supportedfreely on the truck frame; and means forpreventing vertical movement ofsald bolster, relatlvely to the.

truck frame. I

6." In a locomotive engine, the combination 7 of a main frame; a radialtruck pivoted V thereto; equalizing levers pivotally connected to themain frame; a bolster coupled to said levers and supported freely on thetruck frame; and a guard' plate secured to the truck frame and fittingover the bolster.

7. In a locomotive en ine the combination" of a main frame; a radialtruck pivoted thereto; equalizing levers pivotally connect- 7 ed to the.mainframe; abolster coupled to said levers and supported freely on thetruck frame; a guard plate securedto the truck frame and fitting overthe bolster; and centering springs bearing on said guard plate and onthe main frame.

8. In a locomotive truck, the combination of a top transom havingbolster seats on its upper side, pairs of pedestal jaws secured to theends of said transoms, radius bars connected, at their rear ends, to thebottoms of the pedestal jaws and connected, one to the other, at theirfront ends, and braces connecting the tops ofthe pedestal jaws with theradius bars.

- JOHN S. PAYNE. Witnesses: r C. B. HARBISON,

W. H. I-IARRisoN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patentv Washington, I). G.

